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let, feel, see, look at, watch, have, make, notice,hear等 動詞 后 , 動詞 不定式作 賓語時 , 要省略 to。但在 變 被 動語態(tài)時 , 省略的 to要加上。如:I heard someone knock at the 敲門。We saw him enter the 。? 在 would you please, had better, why not, would rather等 結(jié) 構(gòu)的句型后 , 要用不 帶 to的不定式。如:Would you please make your bed?請整理下你的床 , 好嗎?You39。d better go to bed 。3. 特殊疑問詞+動詞不定式能接不定式的疑問詞有: what, which, how, who, when,where等。它 們 可以在句中作主 語 、 賓語 和表 語 。如:I don39。t know what to 。I don39。t know how to do 。I don39。t know what to do about , 我不知道該做些什么。The question is who to 。【 例 1】 How kind you are! You always do what you can ________ others.(2022, 無錫 )A. help B. helping C. helps D. to help解析: 動詞不定式作狀語。句意為 “ 你總是盡你所能來幫助別人。 ”答案: __D__【 例 2】 My parents often tell me________too much junk food because it39。s bad for my health.(2022, 漢陰模擬 )A. not eating B. not to eatC. eating D. to eat解析: tell sb.(not) to do “ 告訴某人 (不要 )做某事 ” , 動詞不定式做賓語;由原因狀語從句的句意 “ 因?yàn)樗鼘ξ业慕】挡焕?” 可知 , 此處應(yīng)用動詞不定式的否定形式。答案: __B__【 例 3】 The traffic signs warn people after drinking.(2022, 青島 )A. to